Answer:
Step-by-step explanation:
We have been given an expression 
. We are asked to find equivalent expression to our given expression.
Using distributive property 
, we will get:
Therefore, the expression is equivalent to our given expression.
Pretty sure that's right.
Number 19 I think is if you add the awnser to one of the numbers you where subtracting and you get the other number you where subtracting you are right like...
Lets say you had the problem 3-2 which is obviously 1 but if you did 2+1 it's 3 so that's how you check.
I just took the test, it was SAS.
It would be 48 because 4x12 is 48 so 48 is your answer
